Hi Mary.
I highly recommend contacting Ta Mara Conde at Historic Gravestone Services in New Salem, Massachusetts,
http://historicgravestone.weebly.comTa Mara is an expert in this area and knows our climate and pollution challenges in the region. (Assuming you are in Orangetown, Rockland County, NY-saw the Dutch show there a few years ago now! She will not know me by name but you can tell her that I sew her presentation at History Camp.)
I also have some Bergen County, New Jersey, contacts I can reach out to (Dutch sandstone and all) but I would start with Conde.
Feel free to reach out to me directly (
m@mnd.nyc).
Michelle
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Michelle Novak
Brand Designer, Genealogical Trustee, Masters of Information Student
Manhattan, NY
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